Integer overflow in the __vstrfmon_l function in stdlib/strfmon_l.c in the strfmon implementation in the GNU C Library (aka glibc or libc6) before 2.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a crafted format string, as demonstrated by the %99999999999999999999n string, a related issue to CVE-2008-1391.
http://security.gentoo.org/glsa/glsa-201011-01.xml
http://sources.redhat.com/bugzilla/show_bug.cgi?id=10600
http://sourceware.org/git/?p=glibc.git;a=commit;h=153aa31b93be22e01b236375fb02a9f9b9a0195f
http://www.debian.org/security/2010/dsa-2058
http://www.mandriva.com/security/advisories?name=MDVSA-2010:111